Chain-making machine.



P. H. STANDISH.

CHAIN MAKING MAGHINE.

APPLICATION FILED JULY 24, 1907.

Patented Apr. 27, 1909.

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P. H. STANDISH.

CHAIN MAKING MAGHINE. APPLICATION FILED JULY 24, 1907.

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P. H. STANDISH.

CHAIN MAKING MACHINE. APPLIOATION IiLED JULY 24, 1907.

91 9,488, Patented Apr. 27, 1909.

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CHAIN MAKING MAGHINB.

APPLICATION FILED JULY 24, 1907. 91 9,488. Patented Apr. 2'7, 1909.

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lHILANDF R H. STANDISH, OF CLEVELAND, OHIO.

CHAIN-MAKING MACHINE Specification of Letters Patent.

Patented April '27, 1909.

Application filed July 24, 1907. Serial No. 385,320.

T 0 all whom it may concern:

Be it known that I, PnILANoEn ii. STAND- ISH, a citizen of the UnitedStates oi America, residing at Cleveland, in the county of Cuyahoga andState of Ohio, have invented. certain new and useful Improvements inChain- Making Machines; and I hereby declare the following to be a full,clear, and exact description of the invention, such as will enableothers skilled in the art to which it pertains to make and use the same.

This invention relates to improvements in machines for making chain, andpertains more especially to machines For making welded chain.

The primary object of this invention is to make welded chain with suchfacility that the cost of such chain is materially reduced.

With this object in view, and to the end of realizing any otheradvantages hereinafter appearing, this invention consists in certainfeatures of construction, and combinations of parts, hereinafterdescribed, pointed out in the claims and illustrated in theaccornpanying drawings.

In the said drawings, Figure 1 is a top plan of a machine embodying myinvention. Fig. 2 is a vertical section on line 22, Fig. 1, looking inthe direction indicated by the arrow. Fig. 3 is a sectional view indetail, illustrating the mechanism employed in turn ing thechain-holding tongs and also showing the anvil and the blank-carryingjaws of the blank-feeding tongs. Fig. 3 is drawn on a larger scale thanFigs. 1 and 2. Fig. 1 is a side view, partly in section, mainlyillustrating the mechanism employed in swinging the blank-feeding tongslaterally, and also showing the insertion of a blank into the link lastWelded. Fig. 5 is an enlarged vertical sec tion, in detail, on line5'-5, Fig. a, looking toward the anvil. Fig. 6 is an elevation, partlyin section, illustrative of the mechanism employed in turning theblank-feeding tongs. Fig. '7 is a top plan of the chainhold ing tongsand also shows the feeding of the blank next to be welded to and betweentwo bars employed in forcing the separated ends of the blank toward eachother preparatory to the delivery of the blank to the anvil. Fig. 8 is atop plan illustrative of the operation of thesaid bars. Fig. 9 is a topplan of the chain-holding tongs and also shows the withdrawal of awelded link from the anvil. Fig. 10 is a central longitudinal sectiontaken vertically through the chain-holding ton s and shows the link lastwelded gripped by the jaws of the said tongs. Fig. 1.1 is a centrallongitudinal section taken vertically through the blank-feeding tongsand also shows a portion of the mechanism employed in shifting the saidtongs endwise and the mechanism for rendering inoperative the sleeveemployed in closing the jaws ol the blank-feeding tongs. Fig. 12 is acentral longitudinal section taken vertically through the chain-holdingtongs, looking in the direction of the anvil, and shows the jaws oi thesaid tongs in their non-grasping or open position. Fig. 13 is anelevation, partly in section, of the mechanism employed to swing theblank-feeding tongs in a vertical plane. Figs. l, 6, 7, 8, 9, 10, 11, 12and 13 are drawn on the same scale as Figs. 1 and 2.

Referring to the drawings, it represents a blank which is to be added tothe chainink 0 last welded by the machine. The blank 11. is U-shaped andhas its ends it somewhat projecting toward each other and spread apartlaterally as shown very clearly in Fig. 5. The ends it of the blank areheated in any approved manner preparatory to operating on the blank andpreferably preparatory to the delivery of the blank to theblank-"feeding tongs hereinafter described. Means for heating the endsof chain-link-blanks are too well known in the art to requireillustration and description in this specification.

My improved machine comprises blankfeeding tongs for receiving andconveying the heated blank to the chain-link last formed and welded andlor holding the blank during its attachment to the said link and duringthe welding operation upon the blank and long enough alter the weldingoperation until the link formed during the said welding operation hasbeen withdrawn from the we ding means and grasped by chain-holdingtongs.

T indicates the body-portion or stock of the said blank-feeding tongs,which stock or body-portion is iixed to one end of a laterally extendingoscillatory sha'l't K which (see Figs. 1, and 11) has bearing in twoboxes Z which are spaced. longitudinally of the shalt a suitabledistance from the tongs and centrally between the tongs-bearing end andopposite end of the shaft. The boxes 1 are integral or rigid with atable Z which (see Fig. 11) is provided with a depending axle L whichhas lateral bearing in a correspondingly arranged upright box m which issupported as will hereinafter appear. The turntable Z is mounted on theupper end of the box m.

The jaws t of the blank-feeding tongs are pivoted, as at t, to thebody-portion T transversely of the shaft IQ and are consequently capableof swinging toward and from each other to close and open the tongsrespectively. A suitably applied spring 25 (see Figs. 3and 11)interposed between the aws t and between the axes and the outer orblankgrasping ends of the jaws acts to retain the jaws swung apart andconsequently open.

The blank-feeding tongs are arranged at one side of and a suitabledistance from a cam-shaft E which is rotated in the direction indicatedby the arrow 6 and supported from the stationary framework J of themachine, and the shaft K and consequently the tongs when they are inposition at one extremity of their lateral movement and adapted to feedthe blank borne thereby toward the anvil U of blank-welding means, are,as shown in Figs. 1, 2 and 4, arranged in a horizontal plane and at aright angle to the cam-shaft. The said blank-welding means comprise thesaid anvil and a hammer V.

Means for closing the jaws t of the blankfeeding tongs and holding thesaid 'jaws closed immediately upon the reception by and between the saidjaws of a blank are provided and (see Figs. 1, 2, 4 and 11) comprise asleeve 8 which is loosely mounted on and shiftable endwise of the shaftK between the turn-table Z and the tongs. Each jaw tis provided with arearwardl'y projecting arm t and the outer ends of the ja -arms idiverge toward their outer or free extremities, and the sleeve .3 isrounded at its forward end to facilitate the passage of the sleeveforwardly between the jaw-arms against the action of the spring 22. Acollar K suitably fixed on the shaft K and smaller in external diameterthan the rear end of the sleeve 8' is arranged to limit the rearwardmovement of the sleeve. The sleeve 8 is actuated in the directionrequired to close the jaws t b hand or by suitably operated mechanismwich is not shown or described in this specification.

The blank-feeding tongs are preparatory to the reception and grasping ofa blank by the said tongs swung laterally in a horizontal plane to bringthe tongs into the position shown in dotted lines Fig. 1, in whichposition of the tongs a blank u is supplied in any approved manner tothe tongs. The actuation of the tongs-bearing shaft and consequently thetongs borne by the said shaft laterally in a horizontal plane iseffected by turning the turn-table Z which is turned in the onedirection or the other according as the tongs are to be brought intotheir blank-receiving )osition or into position for feeding the b ankendwiseand forwardly to the anvil U.

p The means for actuating the turn-table Z and consequently swing thetongs-bearing shaft K laterally (see Figs. 1 and 4) preferably comprisea cam E and a spring Z for turning the turn-table Z in oppositedirections respectively. The cam E is operatively mounted on the shaft Eand has its working peripheral surface engaged by a roller Z borne by alever Z which is fulcrurned, as at Z*, horizontally and parallelly withthe shaft E, to a stationary object, such, for instance, as a member ofthe framework J. The lever Z is operatively connected by a connectingrod Z with the turn-table Z. A suitably applied spring Z, which is shownattached at one end to the lever Z and at its other end to thestationary framework J,

acts to retain the roller-bearing arm of the lever Z" in engagement withthe cam E and the parts are so arranged and timed and the trend of theworking peripheral surface of the cam E is such that the blank-feedingtongs is swung to receive a blank into the.

position shown in dotted lines Fig. 1. against the action of the springZ and the said spring swings the tongs from the said last-mentionedposition into the position shown in solid lines, Figs. 1, 2 and 3, andthe shape of the said cam is also such as to accommodate the endwisemovement of the shaft K and connected tongs in the last-mentionedpositionof the said tongs, and when the said tongs has been brought intothe last-mentioned position shown in Figs. 2 and 3, the shaft K isshifted endwise and forwardly, as will hereinafter appear, to feed theblank into a recess U formed in the top of the adjacent portion of theanvil where the blank is operated upon by the cooperating anvil. andhammer.

In the position shown in Figs. 2 and 3 and in solidlines Fig. 1, theblank-feeding tongs holds the blank directly forward of the forward endof the anvil-recess U, and consequently to accommodate the forcing ofthe separated ends u of the blank toward each other over the anvilpreparatory to the entering of the anvil-recess U by the said ends ofthe blank the blan'kfeeding tongs are swung upwardly somewhat orelevated after the insertion of one of the said ends of the blank intothe link last welded or formed and preparatory to the delivery of theblank into the anvil-recess, as will hereinafter 'inore clearly appear.7

The shaft K and consequently the blank" feeding tongs upon their lateralmovement into the position shown in Figs. 2 and 3 are actuated endwiseforwardly toward the anvil, andduring the forwardly endwise movement ofthe blank-feeding tongs an end of the blank borne by the said tongs isinserted into the last-made link 0 held by chain-holding tongshereinafter described and arranged at the left-hand side of theGHClVVlSB travel of the blank-feeding tongs, and A (see Figs. 1, 3, 4, 10' and 12) reprethe sleeve 0;.

sents the body-portion or stock of the chainholdmg tongs, and a, the awsof the last mentioned tongs.

The means for effecting the forwardly endwise movement of thetongs-bearing shaft K to actuate the blank-feeding tongs forwardly asrequired to add the blank to the last-made chain-link held by thechainholdim tongs comprise the following :The shaft i (see Figs. 1, 2,1.1 and 13) extends from the blank-feeding tongs which are arranged atone side of the table 1 as shown through the boxes Z and Z and asuitable distance beyond the opposite side of the table and provided atthe last-mentioned side and a suitable distance from the table with acollar K fixed to the shaft in any ap proved manner.

A spiral spring K is mounted and confined on the shaft K between thecollar K and the adjacent box Z and acts to retain the shaft andconsequently theblank-feeding tongs in their rearward position. Theshaft K is arranged to be actuated forwardly against the action of thespring K by the head a formed upon the forward end of a push-bar atwhich is shiftable endwise forwardly and rearwardly relative to the rearend of the shaft K and has bearing in a sleeve ru loosely mounted on andshiftable endwise of the said bar. A s iral. spring is mounted andconfined on t e bar a between the head w and The bar a is provided witha pin :0 which engages a slot 1r" formed in and extending a suitabledistance longitudinally of the sleeve The in .1 engages the for- Wardend wall of the said slot in the rearward position of the sleeve. Thespring x, which is somewhat stiffer than the spring K, acts to push thebar forwardly, and the engagement of the pin 9; with the forward endwall of the slot limits the forward movement of the bar independently ofthe bar-embracing sleeve x A shaft y, arranged horizontally and parallelwith the cam-shaft E, is located below the sleeve and supported frommembers of the framework J. The shaft 2 is operatively provided with adepending arm 1/ which is operatively connected by a rod 3 with anupright tilting lever 3 fulcrumed, as at t/ horizontally and parallellywith the cam-shaft E, to the framework J. The lever if is rovided at itsupper end and above the fu crum if with a roller y which engages theworking eripheral surface of a cam E with which t e shaft E isoperatively provided. The shaft y is also operatively provided with anupwardly projecting arm 1 which is operatively attached at its upper endto the sleeve r show-n pivoted, as at .r, to the arm 3 parallelly withthe fulcrum 3 The arm 1 is provided with a projecting lug 1 whichextends under the sleeve 1: and forms a seat or bottom bearing for thesleeve. A suitably applied spring g acts to retain the said sleeve .inits outer position and also acts to retain the roller 1 of the lever yin engagement with the cam E, which spring is shown attached. at one endto the lever near the fulcrum of the lever and at its opposite end tothe framework J. The arrangeinent of the parts is such and theperipheral working surface of the cam E has such trend that as soon asthe shaft K and connected blank-feeding tongs have been swung laterallyinto the position shown in Fig. 2 and in solid lines Fig. 1, the cam Eactuates the lever if against the action of the spring g and in thedirection required to oscillate the shaft y in the direction required toeffect the forward movement of the sleeve as and pushbar a: and therebyresult in the actuation of the tongs-bearing shaft K forwardly againstthe action of the spring K and far enough to connect the blank borne bythe blankfeeding tongs with the link held by the chainholding tongs andbring the blank into position between two in'essure-exerting bars Barranged above the anvil-recess U and parallelly with the cam-shaft E atopposite sides respectively of the anvil, and the trend of the aforesaidsurface of the cam-wheel E is furthermore such that the blank-feedingtongs are held in their forward position until the ends a of the blankhave been properly forced toward each other by the bars B and until thework upon the blank by the harm mer G and anvil U has been completed,whereupon the tongs-bearing shaft K is rcndered free to be returned intoits rear position by the spring K. i

The box at is supported as required to render it capable of being swungin a vertical plane as will hereinafter appear, and consequently thehead a: of the push-bar J has the dimensions necessary to insure aproper engagement of the push-bar with the shaft K, and it will beobserved that the spring a) affords relief to prevent breakage or injuryto any member of the apparatus by any obstruction to the passage of theblank toward the anvil or into the anvil-recess U. in other words thebar a and spring LE3 form somewhat yieldable means for actuating theshaft K and consequently the blank-feeding tongs forwardly endwisetoward the anvil. i

During the operation upon the blank by the bars B and blank-weldingmeans and during the withdrawal of the last-made link from the anviluntil the said link has been grasped by the chain-holding tongs theblank-feeding tongs have their jaws t arranged the one above the otherand in the same plane vertically, as shown in Figs. 7, 8, 9, 11 and 13.

The chain-holding tongs, during the withdrawal of the last-made linkfrom the anvil until the said link has been grasped and thereupon onlyheld by the said tongs, have their jaws (1 arranged the one above the130 other and in the smile plane vertically as shown in Figs. 9 and 10.

Y The chain-holding tongs are turnable, and also shiftable endwise aswill hereinafter appear toward and from the endwise travel of theblank-feeding tongs, and-the arrangement of the parts is such that alink held by the chain-holding tongs to receive a blank when thechain-holding tongs are in their inner or forvard position, is arrangeddirectly forward of the forward end of the anvil-recess U between thelatter and the blank held by the blank-feeding tongs as shown in Figs.1, 2 and 3. To freely accommodate therefore the passage of that end ofthe blank which is nearer to the chain-holding tongs into the last-madelink held by the said tongs the blank-feeding tongs are given about aneighth of a turn to the left, as shown. very clearly in Figs. 3, 4 and5, and somewhat swung or actuated laterally to the right by the portiona of the cam E (see Fig, 4) to shift the blank somewhat to the right oraway from the chain-holding tongs as shown very clearly in Figs. 4 and5.

The body-portion or stock A of the chainholding tongs is arrangedhorizontally and parallel with the cam-shaft E (see Fig; 1). The stock A(see also Figs. 7, 9, 10 and 12) has bearing in a correspondingly,arranged box J which is formed upon or rigid. with any stationaryobject such, for instance, as projecting members J of the framework J.

The jaws a of the chain-holding tongs are pivoted, as at a, to the stockA horizontally and transversely of the stock and are consequentlycapable of swinging toward and from each other to close and open thetongs respectively. A suitably applied spring a which is interposedbetween the jaws a and between the axes and the outer or grasping endsof the jaws, acts to retain the jaws swung apart and consequently open.

The chain-holding tongs are actuated into their forward or innerposition to receive the last-made link as soon as the said link has beenwithdrawn from the anvil by the blankfeeding tongs as shown in Fig. 9.Of course the jaws a are open, as shown in Fig. 12,'to receive the saidlink, and means for closing the said jaws immediately upon the receptionby and between the aws of the link are provided and (see Figs. 1, 10 and12) comprise'a rod D which is arranged centrallyand longitudinally ofand has bearing in the stock A. Both the stock A and rod D move endwisetogether during the endwise actuation of the stock A but the rod D isalso shiftable endwise independently of the stock A when the latter isin its forward or inner position. Each jaw a is provided with arearwardly projecting arm a", and the adjacent and forward or inner endof the rod D tapers and in the open or nongrasping position of the jawsa extends somewhat between the outer ends of the said jaw-arias and istherefore arranged to farther separate the said jawarms upon the forwardor inward actuation of the rod independently of the stock A and therebyclose the said jaws, as shown in Fig. 10, against the action of thespring (L The stock A of the chain-holding tongs extends through and asuitable distance beyond the outer end of the box J, and a collar A ismounted on and fixed to the said stock a suitable distance from theouter end of the said box. A spiral spring A is mounted and confined onthe stock A between the box J and the collar A. The spring A acts toretain the stock A and consequently the chain-hold ing tongs in theirrearward and outer or in operative position. The stock A is providedexternally and adjacent the free ends of the jawarms a with a laterallyprojecting annular flange A and the said stock forward of the saidflange is slotted longitudinally, as at A to accommodate the locationand operation of the jaws a and their said arms. In the forward or innerposition of the chain-holding tongs, as shown in Fig. 10, the flange Aabuts against the peripheral surface of a suitably arranged antifrictionroller f which is suitably supported from any stationary object as, forinstance, an arm or bracket J rigid with the box J. The roller f limitsthe forward or inward movement of the chainholding tongs and constitutesan antifriction end bearing or stop for the stock A when the latterwhile in its forward or inner position is oscillated or turned to turnthe chain-holding tongs," and I would here remark that the meansforturning the chain-holding tongs (see Figs. 1 and 3) comprisecam-actuated mechanism and a spiral spring a for turning the said tongsin opposite directions respectively, and the said cam-actuated mechanismcomprises a rod A which is operatively con nected at one end with thestock A at the flange A and at its other end with the upper end of anupright lever A which (see Fig. 3) is fulcrumed, as at a horizontallyand parallelly with the cam-shaft E, to the framework J. The lever A isprovided between its fulcrum and the rod A with a roller 0? whichengages the working peripheral surface of a cam E with which the shaft Eis operatively provided. The spring a acts to retain the roller a of thelever A in engagement with the cam E, which spring is shown attached atone end to the lever and at its opposite end to the framework J.

The rod D extends a suitable distance beyond the rear or outer end ofthe stock A of the chain-holding tongs, and a collar D is mounted on andfixed to the rod rearwardly of and a suitable distance from the stock A.A spiral spring D is mounted and confined on the rod D between thecollar D and the rear or outer end of the stock A. The spring D acts toretain the rod Din its outer and inoperative position shown in Fig. 12in which the greater portion of the tapered forward end of the rod isrearward of the jaw-arms a and the jaws a are open, as alreadyindioated.

The outer end of the rod 1) (see Figs. 1, 7. 9, 10 and 12) is overlappedby one arm of a bell-crank lever D which is fulcru med vertically, as atD, to any station-arr object such, for instance, as a member of theframework J, and has its other arm operatively connected by a rod (Z(see Fig. 1) with an up right lever (Z which is fulcrumed, as at (l,horizontally and parallelly with the shaft E, to the framework J. Thelever is provided with a roller (1* which engages the working peripheralsurface of a cam E" with which the shaft E is operatively provided.

The spring E is stiffer than the spring A so that the latter will yieldbefore the former, and consequently during the operation of thecam-actuated mechanism comprising the lever (Z, red at and lover D toactuate the rod 1) forwardly or irnrardly the stock A of thechain-holding tongs is actuated forwardly or inwardly against the actionof the spring A until the stock comes in. contact with the stop-formingroller f, and the throw of the cam E is long enough to actuate thered 1) forwardly against the action of the spring 1")" as soon as theforward or inward movement of the stock A of the chain-moving tongs hasbeen arrested by the roller or stopf, and the forward or inward movementof the rod D independently of the said stock results, as alreadyindicated, in the closing of the jaws (1 of the chain-holding tongs.Obviously the spring A also acts to retain the roller c of the lever (Zin contact with the cam ll. The arrangement of the parts is such and thecam E has such shape and dimensions that the chain-holding tongs arebrought into position to receive the last-made link upon the withdrawalof the said link from the anvil as shownin Fig. 0, and the jaws of thesaid tongs are actuated toward each other to grasp the link at theleft-hand side As already indicated, the last-made link is arrangedhorizontally while in the anvil-recess U and during the feeding of thelink from the anvil to the chain-holding tongs which have their jaws aarranged in the same plane vertically during the reception of the linkby the chain-holding tongs, as already indicated, and the parts soarranged and timed. that the chain-holding tongs, after the reception bythem of the link and preparatory to the insertion. into the said link ofthe link-entering end of the blank next to be fed to the anvil, areoscillated or turned, by the operation of the mechanism actuated by thecam l against the action of the spring o to cause the link to facelaterally toward the approaching blank as shown in Figs. 1, 2 and 3and'thereby to bring the opening in. the

link in )osition to receive the link-entering end of the blank, as shownin Figs. 4 and 5, and the link in its blank-receiving position leanssomewhat toward the ap roaehing blank so that the upper portion of t 1eturned link is nearer the approaching blank than the lower portion ofthe said link and overhangs the link-entering end of the blank beforethe said end has entered the link and thereby facilitates and positivelyinsures the proper entrance of the said end of the blank into the link.The parts are also so arranged and timed that the cam-actuated mechanismcomprising the lover (1, red (X and lever 1) shall actuate thechain-holding tongs forwarclly or inwardly to receive the last-madelink, that as soon as the link-entering end of the blank next to bewelded has been inserted into the said link during the blank-feedingmovement of the blank-feeding tongs the rod 1) is rendered free to moverearwardly or outwardly into its inoperative position and actuated intoits said position by the spring I) so as to result in the actuation ofthe jaws a of the chain-holding tongs by the spring a" into theirnongrasping or 0 )en and ino erative position to release the link whicht 1ereupon hangs from the blank and is carried with the blank during theremainder of the blanle'feeding n'iovcnnen't of the blanle'feedingtongs, as shown in lligs. (S, 7 and 8, and. the blank-feeding tongs areswung upwardly somewhat, as shown .in Figs. 6 and 13, upon the releaseof the link by the claim-holding tongs during the said remainder of thesaid movement of the blank-feeding tongs so as to bring the blank intoposition over the anvil-recess U and between the pressureexerting bars Bat the end of the said movement, as shown in Fig. 7, whereupon the saidbars are operated to force the separated ends of the blank toward eachother, as shown in Fig. S. The parts are also so arranged and timed thatimmediately upon the re ease of the last-made link by the chain-holdingtongs and consequently 11)0l1 the delivery of the said link to the blankbeing fed to the anvil, the chain-holding tongs are rendered free to beturned by the spring a" into their position wherein their jaws a arearranged in the same plane vertically, as shown in Figs. 7, 8, 9 and 10,as required for the reception of the link into which the said blank isto be converted, and the blank-holding tongs, during the remainder ofits blank-feeding movement after the said delivery of the link to thesaid blank from the chain-holding tongs, is turned, as will hereinafterappear, to bring the jaws t of the blank-feeding tongs into the sameplane vertically, as shown in Fi 's. 6, 7, 8 and 13, as rec uired tocause the blank to properly enter the anvil-recess U during the deliveryof the said blank to the anvil-recess, and the said jaws remain in theirlast-mentioned relative position until the link into which the saidblank is to be converted has been formed and fed and delivered to thechain-holding tongs by the blank-feeding tongs, as shown in Figs. 9, 10and 11, and released by the last-mentioned tongs.

The pressure-exerting bars B are arranged in line endwise. The bars Bare simultane ously reciprocated endwise and are moved toward or fromeach other to operate upon or release the blank. The bars B have bearing in boxes U arranged at the sides of and rigid with the anvil. Thebars B are actu ated toward each other by suitably supportedcam-actuated bell-crank levers B against the action of suitably appliedsprings 12. That is, each bar B is operatively connected at its outerend with one arm of a bell-crank lever B which is arranged in ahorizontal plane and fulcrumed vertically, as at Z), to any stationaryobject, such, for instance, as a member of the framework J, and has itsother arm provided with a roller B which engages the working peripheralsurface of a cam E with which the shaft E is operatively provided. Eachspring I) is attached at one end to the connected lever B and at itsother end to any stationary object such, for instance, as a member ofthe framework J. The arrangement of the parts is such the cams IE havesuch shape that immediately upon the actuation of the blank over andinto position to descend into the anvil-recess U the levers B areactuated against the action of the springs b so as to effect themovement of the bars B toward each other into engagement with the outerside of opposite ends respectively of a blank and thereupon force thesaid ends of the blank together, as shown in Fig. 8, and the shape ofthe cams is furthermore such that immediately upon the forcing of theends of the blank toward each other the bars B are separated by thesprings b, whereupon the shaft K and consequently the blankfeeding tongsare swung in the direction required to lower the blank into theanvilrecess U preparatory to the delivery of the first blow upon theends of the blank by the hammer V.

As soon as the blank has been brought into position within theanvil-recess U the hammer V is actuated to deliver four successive blowsupon the blank to weld or unite the ends of the blank together. Thehammer V (see Figs. 1 and 2) is arranged to swing in a vertical planeabove the anvil U, being pivoted, as atV, horizontally and parallellywith the cam-shaft E to any stationary ob ject such, for instance, as amember of the framework J, and the hammer is operatively connected by alink V with an arm V of a shaft V which is arranged parallel with thecam-shaft E and a suitable distance below the hammer and supported fromthe said framework. The shaft V is also operatively provided with an armV which is provided with a roller V engaged by a cam E with whichthe'shaft E is operatively provided, which cam has the shape required tocause the hammer to deliver four successive blows during each rotationof the cam-shaft. The hammer V is arranged to deliver itsblows bygravity and the arrangement of the parts and the trend of the workingsurfaces of the cam E are such that the hammer is raised preparatory tothe insertion of theblank into the anvil-recess U and that immediatelyupon the delivery of a blank to the anvil the shaft V is oscillated inopposite directions alternately until the hammer has delivered fourblows upon the blank.

To properly weld the ends of the blank together the hammer-blows shouldbe alter nately delivered upon opposite sides of the blank, and hencemeans for giving the blank feeding tongs and blank to be welded a halfturn in the interval of time between successive hammer-blows areprovided and (see Figs. 1 and 6) preferably comprise a bevelgear 7cwhich is operatively mounted on the shaft K between the boxes Z and Z bythe well known means of grooveand-feather, as at k, as shown in Fig. 11,and the groove of the last-mentioned means extends far enoughlongitudinally of the shaft, as at It, and arranged as required toaccommodate the for wardly endwise movement of the shaft. The gear ll:meshes with a diametrically larger bevel-gear 12. arranged. under theshaft K and between the shaft and the turn-table Z and rests upon thelatter. The gear a is twice as large diametrically and consequently hastwice as many teeth as the gear 1?. The gear at is provided (see Fig.11.) with a depending axle n arranged centrally of and having lateralbearing in the turn-table Z. The gear it (see Fig. 1) is provided at oneside with a laterally projecting arm n which is operatively connected bya connecting rod n with one arm of a bell-crank-lever n which (see Figs.1 and 6) is fulcrumed, as at n, horizontally and parallelly with thecam-shaftE, to any stationary object such for instance as a member ofthe framework J and has its other arm provided with a roller a whichengages the peripheral working surface of a camE operatively mounted onthe shaft E, and the said lever is held with its roller in engagementwith the said surface by a suitably applied spring n which is shownattached at one end to the said lever and at its other end. to theframework J.

The tongs-bearing shaft K and consequently the blank-feeding tongs mustbe swung or moved upwardly to bring the blank out of the anvil-recess Uin order to permit the turning of the blank as hereinbefore described,and the means whereby the swinging or movement of the tongs upwardlyfrom the anvil is effected preparatory to each half turn given to thetongs between successive blows of the hammer V (see Figs 1 and 13comprise a cam E" operatively mounted on the cam-shaft E and having aperipheral working surface engaged by the roller m" borne by the upperend of an upright lever m fulcrumed at any suitable point between itsends, as at M horizontally and parallelly with the said shaft, to anystationary object such, for instance, as the framework J and isoperatively connected at its lower end by a connecting rod m with an armm depending from and operatively connected with the box m. The box m(see Figs. 1, 2 and 13) is pivotally supported from any stationaryobject, such, for instance, as the framework J, having two laterallyprojecting arms m arranged at opposite sides respectively of the box andprovided with trunnions m which are arranged horizontally and in lineendwise and parallel with a cam-shaft E and have bearing in members J ofthe framework J, and the arm m is operatively connected with one of thetrunnions m. A suitably applied spring 'm acts to retain theroller-bearing lever m in engagement with the cam E" and conse quentlyacts to retain the tongs-bearing shaft K in its downwardly swung orhorizon tal position. The spring m is shown attached at one end to thelever m above the fulcrum of the lever, and at its other end to thestationary framework J. The arrangement of the parts and the trend ofthe working surfaces of the cams E and E are such that as soon as thehammer G between successive blow-delivering movements of the hammer hasswung upwardly far enough to permit the raising of the blank-bearingtongs above the anvil far enough to accommodate turning of a blank thesaid tongs is given a half turn. The shape of the cam E is furthermoresuch that the tongsbearing shaft and consequently the blanlefeedingtongs are turned in opposite directions alternately upon successiveupward movements of the blank upwardly from the anvil so that thehammer-blows are delivered upon opposite sidesof the blank alternately.The shape of the cam E is such, as already indicated, that theblank-feeding tongs and consequently the blank are raised during thefeeding movement of the tongs after the insertion of the link-enteringend of the blank into the link held by the, chain-holding tongs and therelease of the link by the last-mentioned tongs so that the blank thencarrying the said link is brought into position over the anvil-recess UWhere, as already indicated, the ends of the blank are operated upon bythe bars B preparatory to the lowering of the blank into the saidrecess. The shape of the cam E is also such that the blank as soon asoperated upon and thereupon released by the bars B is lowered into theanvil-recess U.

As afinished link, having withdrawn from the anvil by the blank-feedingtongs, is grasped by the chain-holding tongs, as shown in Figs. 9, 10and 11, during the rearwardly endwise movement of the shaft K andconnected tongs the sleeve 8 is withdrawn from between the jaw-arms t"by means which preferably comprise an arm Q operatively mounted (see ligs. 1 and 11) on a shaft Q which is supported from the framework =1 andarranged horizontally and parallelly with the cam-shaft E about midwaybetween the turn-table Z and the stationary framework J. The shaft Q isoperatively provided at one end with an upwardly projecting arm Qoperatively connected by a rod Q, with a lever Q" which is fulcrumed, asat Q, horizontally and parallelly with the shafts Q and E, to theframework J and bears a roller Q which engages the peripheral workingsurface of a cam E operatively mounted on the cam-shaft E. Therollerbearing lever Q is continually held in en gagement with the saidsurface of the cam l by a suitably applied spring Q which is shownattached at one end to the link Q and at its other end to the frameworkJ. The parts are so arranged and the cam E has such shape thatimmediately upon the withdrawal of a link from the anvil to the positionshown in Figs. 9, l0 and ll the arm Q of the shaft Q comes intoengagement, with a forwardly facing annular shoulder 30 formed on thesleeve 3, as shown in Fig. 11, and thereupon actuates the sleeverearwardly against the action of the spring Q far enough to permit theblank-feeding tongs to open and release the said link.

The trend of the cam ii is furthermore such that imn'iediately upon therelease of the finished link by the blank-feeding tongs dur ing thewithdrawal of the link from the anvil and after the said link has beengrasped by the chain-holding tongs, the said shaft K and connectedblai'ikd'coding tongs are given an eighth of a turn as required topresent the next blank to be received by the blank-feedin tongs inproper position relative to the last-made link held. by thechain-holding tongs. I would also remark that preferably the shape ofthe cam E is also such that the shaft K and connected blank-feedingtongs dwell momentarily during the grasping by the chaiinholding tongsof the link withdrawn from the anvil by the blai'ik-feeding tongs,although the release of the link by the last-mentioned tongs and thegrasping of the link by the chain-holding tongs may be simultaneous. Themaking of cams of any particular shape or con'i'iguration to produce orpermit any special movements of camactuated members or mechanism atpredetermined times is so well understood inthe arts that illustrationin greater detail or extended description of the shape or operation ofthe cams hereinbefore referred to is not considered necessary in thisspecification. I would also remark that the second last made link (seeFigs. 9, and 11) during the withdrawal of the last-made link 0 from theanvil strikes against the jaws a of the chain-holding tongs and isdriven or pushed by the said jaws out of their way in the direction ofthe anvil and to the opposite side of the last-mentioned link so thatthe said second last-made link does not interfere withthe propergrasping of the last-made link by the said jaws.

What I claim is 1. In a chain-making machine, the combination, withblank-welding means, tongs adapted to feed a link-blank to and movableendwise toward and from the blank-welding means, means for forcing theseparated ends of the blank toward each other preparatory tioned tongsthat one end of the blank during the actuation of the blank-feedingtongs toward the blank-welding means shall pass into the said link,means whereby the chain-holding tongs are caused to release the saidlink upon the passage of the said end of the blank into the link, meanswhereby the chain-holding tongs are operated to grasp the last-made linkupon the withdrawal of the said link by the blank-feeding tongs from theblank-welding means, and means whereby the blank feeding tongs arecaused to release the last mentioned link upon the grasping of the linkby the chain-holding tongs.

2. In a chain-making machine, blank welding means, tongs adapted to feeda linkblank to and movable toward and from the blank-Welding means,means for forcing the separated ends of the blank toward Each otherpreparatory to the welding operation, chain-holding means for presentingthe last link added to the chain in such position rel-ative to the blankborne by the first-mentioned tongs that one end of the blank during theactuation of the blank-feeding tongs toward the blank-welding meansshall pass into the said link, means whereby the chain-holding means arecaused to release the said link upon the passage of the said end of theblank into the link, means whereby the chain-holding means are operatedto grasp the last made link upon the withdrawal of the link by the blank-i eeding tongs from the blank welding means and hold the link until thereception of a blank by the link, and means whereby the blank-feedingtongs are caused to release the last-mentioned link upon the grasping ofthe link by the chainholding means.

3. In a chain-making machine, blankwelding means, laterally movableturnable tongs adapted to feed a link-blank t0 and 1 shiftable endwisetoward and from the blankwelding means, and means for forcing the endsof the blank toward each other preparatory to the welding operation,endwise movable turnable chain-holding tongs, means whereby thechain-holding tongs and the blank-feeding tongs are relatively turned tocause the last link added to the chain to be presented by thechain-holding tongs in such position relative to the blank borne by theblank-feeding tongs that one end of the blank during the actuation ofthe blank-feeding tongs toward the blank-welding means shall pass intothe said link, means whereby the chain-holding tongs are caused torelease the said link upon the passage of the said end of the blank intothe link, means whereby the chain-holding tongs are operated to graspthe last-made link upon the withdrawal of the link by the blank-feedingtongs from the blank-welding means and hold the link until the receptionof a blank by the link, and means whereby the blank-feeding tongs arecaused to release the last-mentioned link upon the grasping of the linkby the chainholding tongs.

4. In a chain-making machine, blank welding means, laterally movableturnable blank-reeding tongs adapted to feed a linkblank to andshiftable toward and from the blank-welding means, said tongs being supported as required to render them capable of being swung in a verticalplane; means for actuating the blank-feeding tongs toward and from theblank-welding means; means for turning the blankd eeding tongs; meansfor swinging the tongs in a vertical plane; means for forcing theseparated ends of the blank toward each other preparatory to the weldingoneration, turnable chain holding tongs shiftable relative to the travelof the blank-feeding tongs for presenting the last link added to thechain in such position relative to the blank borne by the blank-feedingtongs that one end of the blank during the actuation of the blankeedingtongs toward the blank-welding means shall pass into the said link meansfor shifting the chain-holding tongs relative to the travel of theblankfeeding tongs; means for turning the chainholding tongs; meanswhereby the chainholding tongs are caused to release the said link uponthe passage of the aforesaid end of the blank into the said link, meanswhereby the chain-holding tongs are operated. to grasp the last-madelink upon the withdrawal of the link by the blank-feeding tongs from theblank-welding means and holai the link until the reception of a blank bythe link, and means whereby the blank-feeding tongs are caused torelease the last-mentioned link upon the grasping of the link by thechainholding tongs.

5. In a chain-making machine, blankwelding means, laterally movableturnable tongs adapted to feed a link-blank to and movable endwisetoward and from the blankwelding means, means for actuz'tting theblank-feeding tongs relative to the blankwelding means, means forforcing the sepa- 5 rated ends of the blank toward each otherpreparatory to the welding operation, turn- 1 able chain-holding tongsarranged at one l side of and shiftable endwise toward and from the lineof endwise travel of the blankfeeding tongs and adapted to present thelast link added to the chain in such position relative to the blankborne by the blankfeeding tongs that one end of the blank during theactuation of the blank-feeding tongs toward the blank-welding meansshall pass into said link; means for actuating the chainholding tongsendwise, means for turning the chain-holding tongs, means whereby thechain-holding tongs are caused to release the said link upon the passageof the aforesaid end of the blank into the said link, means whereby thechain-holding tongs are operated to grasp the last-made link upon thewithdrawal of the link by the blank-feeding ton s from the blank-weldingmeans and hold the link until the reception of a blank by the link, andmeans whereby the blankfeeding tongs are caused to release thelastmentioned link u on the grasping of the link by the chain-holc ingtongs.

6. In a chain-making machine, blanle weldingmeans, tongs adapted to feeda linkblank to and movable toward and from the blank-welding means,means for actuating the blank-feeding tongs to feed the blank to theblank-Welding means, means for withdrawing the blank-feeding tongs fromthe blank-welding means, means for forcing the se arated ends of theblank toward each ot er, preparatory to the welding operation, achain-holding device movable toward and from the line of travel of theblank-feeding tongs and adapted to present the last link added to thechain in such position relative to the blank borne by the blank-feedingtongs that one end of the blank during the actuation of theblank-feeding tongs toward the blank-welding means shall pass into thesaid link; means whereby the chain-holding device is caused to releasethe said link upon the assage of the said end of the blank into thelink; means whereby the chain-holding device is operated to grasp thelastmen tioned link upon the Withdrawal of the link by the blank-feedingtongs from the blankwelding means and hold the link until the receptionof a blank by the link, and means whereby the blank-feeding tongs arecaused to release the last-mentioned link u on the grasping of the linkby the chain-holc ing device.

7. In a chain-making machine, blank- Welding means, a device for feedingthe blank to the blank-welding means and effecting the removal from theblank-welding means of a link formed by the operation upon the blank bythe blank-welding means, means for forcing the separated ends of theblank toward each other preparatory to the welding operation,chain-holding tongs arranged at one side of and shiftable endwise towardand from the line of travel of the blank-feeding device and adapted topresent the last link added to the chain in such position relative tothe blank borne by the blank-feeding device that one end of the blankduring the actuation of the blank-feeding device toward theblank-welding means shall pass into the said link, means for actuatingthe chain-holding tongs endwise, means whereby the chain-holding tongsare caused to release the said link upon the passage of the aforesaidend of the blank into the link, means whereby the chain-holding tongsare 0 erated to gras the last-made link upon the withdrawal 0" the linkby the blank-feeding device from the blank-welding means and hold thelink until the reception of a blank by the link, and means whereby theblank-feeding device is caused to release the last-mentioned link uponthe grasping of the link by the chain-holding tongs.

8. 111 a chain-making machine, the combination, with blank-weldingmeans, a de vice for feeding the blank to the blankwelding means andeffecting the removal from the blank-welding means of a link formed bythe operation upon the blank by the blank-welding means, and means forforcing the separated ends of the blank toward each other preparatory tothe welding operation, of chain-holding tongs arranged at one side ofand shil'table endwise toward and from the line of travel of theblank-feeding device and turnable in its forward position to present thelast link added to the chain in such )osition relative to the blankborne by the blank-feeding device that one end of the blank during theactuation of the blank-feeding device toward the blank-welding meansshall pass into the said link, means for actuating the chainholdingtongs endwise, means whereby the chain-holding tongs are caused torelease the said link upon the passage of the aforesaid end of the blankinto the link, means whereby the chain-holding tongs are operated tograsp the last-made link upon the withdrawal of the link by theblank-feeding device l'rom the blank-welding means and hold the linkuntil the reception of a blank by the link, and means whereby theblank-feeding device is caused to release the last-mentioned link uponthe grasping ol' the link by the chainl1olding tongs.

9. In a chain-making machine, the combination, with blank-welding means,a device for feeding the blank to the blank-welding means and effectingthe removal from the blank-welding means of a link formed by theoperation upon the blank by the blank- Welding means, and means forforcing the separated ends of the blank toward each other preparatory tothe Welding operation, of turnable chin-holding tongs arranged at oneside of and shiftable endwise toward and from the line of travel of theblank-feeding device and adapted in its forward position to'present thelast link added to the chain in such )osition relative to the blankborne by the b ank-feeding device that one end of the blank during theactuation of the blank feeding device toward the blank-welding meansshall pass into the said link, means for actuating the chain-feedingtongs en'd wise, means for turning the chain-holding tongs, meanswhereby the chain-holding tongs'are caused to release the said link uponthe passage of the aforesaid end of the blank into the link, meanswhereby the chainholding tongs are operated to grasp the lastinade linkupon the Withdrawal of the link by the blank-feeding device from theblankwelding means and hold the link until the reception of a blank bythe link, and means whereby the blank-feeding device is caused torelease the last-mentioned link upon the grasping of the link by thechain-holding tongs.

10. In a chain-making machine, the combination, with blank-weldingmeans, a device for feeding the blank to the blank-welding means andeffecting the removal from the blank-welding means of a link formed bythe operation upon the blank by the blankwelding means, and means forforcing the se arated ends of the blank toward each ot er pre aratory tothe welding operation, of turna le chain-holding tongs arranged at oneside of and shiftable endwise toward and from the line of travel of theblankfeeding device and adapted in its forward position to present thelast link added to the chain in such position relative to the blankborne by the blank-feeding device that one end of the blank during theactuation of the blank-feeding device toward the blankwelding meansshall pass into the said link, means for actuating the tongs endwise,means for turning the tongs, means for limiting the forward movement ofthe tongs, means whereby the tongs are caused to release the said linkupon the passage of the aforesaid end of the blank into the link, meanswhereby the tongs are operated to grasp the last-'made link upon thewithdrawal of the link by the blank-feeding device from theblank-welding means and hold the link until the reception of a blank bythe link, and means whereby the blank feeding device is caused torelease the last-mentioned link upon the grasping of "the link by thetongs.

11. In a chain-making machine, the combination, with blank-weldingmeans, a device for feeding the blank to'the blankweld ing means andeffecting the removal from the blank-welding means of a link formed bythe operation upon the blank by the blankwelding means, and means forforcing the ends 'of the blank toward each other preparatory to theWelding operation, of turnable chain-holding tongs arranged at one sideof and having a limited range of movement endwise toward and from theline of travel of the blank-feeding device and adapted to be turned inits forward position to present the last link added to the chain in suchosition relative to the blank borne by the b ank feeding device that oneend of the blank during the actuation of the blankfeeding device towardthe blank-welding means shall pass into the said link, means foractuating the tongs endwise, means whereby the tongs are caused torelease the said link upon the passage of the aforesaid end of the blankinto the link, means whereby the tongs are operated to grasp thelastmade link upon the withdrawal of the link by the blank-feedingdevice from the blankwelding means and hold the link until the receptionof a blank by the link, and means whereby the blank-feeding device iscaused to release the last-mentioned link upon the grasping of the linkby the tongs.

12. In a chain-making machine, the combination, with blank-weldingmeans, a device for feeding the blank to the blank-weld :ing means andeffecting the withdrawal from the blank-welding means of the link formedby the operation upon the blank by blankwelding means, and means forforcing the ends of the blank toward eachother preparatory to thewelding operation, of turnable chain-holding tongs arranged at one sideof and shiftable endwise toward and from the line of travel of theblank-feeding device and adapted to be turned in its forward position topresent the last linkadded to the chain in such position relative to theblank borne by the blank-feeding device that one end of the blank duringthe actuation of the blankfeeding device toward the blank-welding meansshall pass into said. link, cam-actuated mechanism for actuating thetongs endwise in one direction, means for actuating the tongs in theopposite direction, means for turning the tongs, means whereby the tongsare caused to release the said link upon the passage of the aforesaidend of the blank into the link, means whereby the tongs are 0 )erated tograsp the "last-made link upon tie withdrawal of the link by the blanlefeeding device from the blahk-welc'ling means and hold the link "untilthe reception of .a blank by the link, and means whereby theblank-feeding device "is caused to release the last-mentioned link uponthe grasping of the link by the tongs.

13. In a chain-making machine, the combination, with endwise movableblank-feeding tongs, of chain-holding tongs arranged at one side of andshiftable endwise toward and from the line of endwise travel of theblank-feeding tongs and having a suitably sup orted stock andlink-grasping jaws pivota y supported from the stoc and adapted to berelatively operated to grasp or release a link; means for operating thejaws, and means whereby the blank-feeding tongs are 0 erated to feed orconvey relative to the chain-holding tongs.

14. In a chain-making machine, the combination, with endwise movableblank-feed ing tongs, and means for effecting the endwise movement ofthe said tongs, of chainholdin tongs arranged at one side of and shiftabe endwise toward and from the line of endwise travel of theblank-feeding tongs and having a suitable supported stock andlink-grasping jaws su ported from the stock and relatively mova le tograsp or release a link; means for effecting the endwise movement of thechain-holding tongs; means act-- ing to retain the aforesaid jaws open;means for operating the jaws to grasp a link entered between the jaws;means whereby the lastmentioned j aw-operating means are renderedinoperative upon the passage into the said link of an end of the blankto be fed by the blank-feeding tongs to the chain-holding tongs, andmeans whereby the blank-feeding tongs are caused to release thelast-made link conveyed by the blank-feeding tongs to the chain-holdingtongs upon the grasping of the link by the said jaws.

15. In a chain-making machine, the combination, with endwise shiftablelaterally extending oscillatory blank-feeding tongs, which tongs aresupported to render them capable of being swung laterally and in avertical plane; means for effecting the end wise movement of the saidtongs; means whereby the blank-feeding tongs are swung laterally; meanswhereby the blank-feeding tongs are swung in a vertical plane, and meansfor oscillating the tongs, of a suitably supported oscillatorychainholding tongs arranged at one side of and shiftable endwise towardand from the line of endwise travel of the blank-feeding tongs; meansfor efiecting the endwise movement of the chainholding tongs, and meansfor oscillating the chain-holding tongs.

16. In a chainnnaking machine having a turnable stock provided at oneend with two link-grasping jaws pivotally supported from the stock andrelatively movable to grasp or release a link, which aws are eachprovided with an arm projecting toward the rear end of the stock; a boxaffording bearing to the stock; means for turning the stock; a stop forlimiting the rearward movement of the chain-holding tongs; means actingto retain the chain-holding tongs in their rearward position; meansacting to retain the aforesaid jaws open; a rod extending through thestock and adapted during the forward movement of the rod to actuate thejaw-arms to cause the jaws to grasp a link entered between the jaws; aspiral spring mounted and confined on the red at the outer end of thestock and acting to retain the rod in its outer position andinstrumental in transmitting motion to the stock during the inwardmovement of the rod; means for actuating the said rod inwardly, and astop arranged to limit the forward movement of the stock before the endof the forward movement of the rod.

17. In a chain-making machine, the combination, with blank-welding meanscomprising an anvil provided in the top thereof with a recess adapted toreceive the blank to be 0 erated upon and open at the front of the anvia device for feedmg the blank to the blank-we1ding means and effectingthe withdrawal from the blank-welding means of a link formed by theoperation upon the blank by the blank-welding means, and means forforcing the ends of the blank together preparatory to the weldingoperation, of chainholding tongs arranged at one side of and shiftableendwise toward and from the line of travel of the blankdeeding deviceand adapted in its forward position to hold a link in line horizontallywlth the aforesaid recess and turnable to present the last link added tothe chain in suc position relative to the blank borne by theblank-feeding device that one end of the blank during the actuation ofthe blank-feeding device toward the blankwelding means shall pass intosaid link; means for actuating the tongs endwise; means for turning thetongs; means whereby the tongs are caused to release the said link u )onthe passage of the aforesaid end of the blank into the link and hold thelink until the reception of a blank by the link; means whereby the tongsare caused to grasp the last-made link upon the withdrawal of the saidlink by the blank-feeding device from the anvil, and means whereby theblankfeeding device is caused to release the lastmentioned link upon thegrasping of the link by the said tongs.

In testimony whereof, I sign the foregoing specification, in thepresence of two witnesses.

PHILANDER H. STANDISH. Witnesses:

C. H. DORER, Vro'ro'a C. LYNCH.

